fix hosts template

Student User

2020-02-19 26d781da63ad0368921d6a0eb1f5efcb9bc479d1

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---
- name: Simple play for class DO407 which introduces j2 templates
  hosts: server
  become: true
  tasks:
    - name: use template to create /etc/motd
      template:
        src: motd.j2
        dest: /etc/motd